Shock-absorber for automobiles.



W. H. 000K.

SHOCK ABSORBER FOR AUTOMOBILES.

APPLICATION FILED SEPT. 10, 1912.

Patented Apr. 8, 1913.

- specification.

I: WALTER H. co'oK, or NEW ORLEANS, LOUISIANA.

SHOCK-ABSORBER ron'au'roiaomnns.

Specification of Letters Patent Application filed September '10, 1912.Serial No. 719,661.

To all whom it may concern:

Be it known that I, \VALTER H. Coon, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ful'Improvements in Shock-Absorbers for Automobiles,;of which the followingis a This invention relates to "improvements in shock absorbers forautomobiles, of the general type shown in my co-pending application,Serial No. 709,098,-wherein an elongated pneumatic tube is employed as acushionin element and is interposed between a side er of, the main frameand a shock transmitting element which is actedon by the main spring,the relation-of the parts being such that apronouncedwave-like'compression of the cushioning element and consequent shockabsorbing action is secured,

whereby practically all of the vibrations are eliminated.

, The shock absorber herein proposed is extremely sensitive in itsaction and effectively takes care'of those'minor vibrations which areconsequent to the action of the mainspring, the latter being of ordinaryweight and strength and, hence, having ts resilicncy unimpaired by theprovision of the secondary shock absorbing devices to be described.

, The invention comprehe'nds as a shock transmitting; means a pair ofhalf springs which are connected to the main springand a spring barwhich engages the pneumatic cushion aforesaid and is acted on, from itscenter outward, by the half springs.

An embodiment of the inventionis illustrated in the accompanyingdrawings,- wherein thefigure is a side elevation showing thp parts inconnection with a side bar of the flame of the vehicle.

, Thelinpention is shown as applied to the 'forward portions of the mainframe, but his equa 1y as applicable to the rear portioins of 'said.frame. I

.The improved shock absorber is combined with each sidebar 1 of the mainframe and comPrehends the main spring 2 and a pneumatic cushion 3, whichconsists of an elongated tube of heavy rubber of nearly the 1 samelength as the main spring and is dis sed lon itudinally. between saidspring and the a Jaccnt bar 1, the bar'l, the spring 2, the. cushion 3,and the other/associated The cushion 3 is directly disposed between thebarl and a spring bar 1,-the latter constituting a support for saidcushion which I p itsubstantially equals in length.

of Louisiana, have mvented' new and usej The bar forms an element of thenieans for-transmitting shocks to-the cushion 3 and rests upon a p airof oppositely arranged half springs. 5 w llCh form the other elements ofsaid means and have their outer ends secured tobars 6. One of the bars 6is pivoted, as at 7, to the gooseneck 8 at the end of the bar 1, and theother bar 6 is pivoted as at 9 to a bracket 10, which depends from saidbar'1.- The half springs 5 are acted on and supported by the spring 2and their inner ends are connected, as by links 11,- to the outer endsof said spring.

The main spring 2 may be, andprefera is arranged in'the manner shown inmy said co-pending application, Serial No. 709,098. In such a case, thedirect support 12, which, in effect, forms a part of said sprlng, havingthe same general direction of curvature, but being of greater lengthandhaving its central portion connected to.

inner end is connected, as by a link 14;,to, thebracket 10, the link 14,as a matter of Patented Anr. 8.1913.

for the main spring comprises a spring bar convenience, hanging from thepivot 9. The

link l tallows the bar 12to have suitable of the car, and saidbarconsequently holds the main spring 2 at all times in roper positionto efficiently receive. the rst -vibratory impulses that may resultfromthe shocks which the vehicle encounters.

- The mutually adjacent free ends of the.

half springs 5 are somewhat closely associated and bear against thecentral portion of the bar 4. The springs 5 may bear di-;

ers. The links 11 at each end of the spring 2 form connecting supportsfor the half ,110 bal i springs 5, which, owing to their relation to thebar 4, cause said bar to act as a anced bedfor the cushion 3.

freedom of motion under the thrust or pull It is apparent that the halfsprings .5act upon the bar 4 from thecenter OfSaidfibaf outwardlytoward'both its ends and that the shocks 'which thesprings 5 transmit.It

follows that a ware-like compression of the 1' cushion 3ifrom the-,cente r outwardly is ob tained. The provision of the bar 12 refines or"modifiesthe action oft-he mainspring' and the pulsations offthe latterare graduowingto the wave-like "compression of the. CllSlllOlT 3, 2

ally and sensitively transmitted to the cushion 3 by thesp'rings fraudthe .bar L The shock transmit-ting elements themselves take up some oftheshocks' br vibrations and,

any

remaining vibrations 5 are finally absorbed' The spring'2'has, as willbe noted,- free Faction when a shock is" first r'eceivedgand itis onlyafter it has performed its-"full 'fun'cs tion that the shock passes tothe air tube, wherein the last ofits vibrations are'ab- 'sorbed. Itwill, more0ver, be noted that the construction above described andother-constructions within the purview of the invention do not entailany stiiiening of the main spring beyond the strengthrequired toproperly carry its load, butprovide for taking 3 up shocks or vibrationswhich may prove greater than'its capacity to care for and claim;

1-. In a shock absorber,-the combination" with a sidebar of the mainframe and with.

absorb. s5

Having tully described invention,- I

' a a longitudinally disposed main spring i of alongitudinally disposedpneumatic cushionwhich bears against the side bar, and shocktransmitting means comprising a longitudinally disposed bar upon whichthe cushion rests and opposed half springs having their free endsdirected toward thecenter of said last named bar and acting thereon, thehalf I springs being connected to the ends of the main spring.

2. In ashock' absorber, the combination "with aside bar of the mainframe and with a longitudinally disposed'niain spring. of alongitudinally. disposed pneumatic cushion 'which bears against the"side bar, shock transmitting means comprisin a longitudinall -d'sposedbar upon'whic the cushion rests, an opposed half springs pivotallysupported at their outer-ends and having their free ends directed towardthe center of I said last named bar and acting thereon, and

' longitudinally disposedpneumatic cushion which bears against the sidebar, shock transmit-ting means comprising a longitudinally disposed barupon which the cushion rests and opposed half springs having their freeends directed toward the center of said last named bar and actingthereon, the half springs being connected to the ends of the mainspring, and rollers interposed bptween the half springs and said lastnamed bar.

at. In ashock absorber, the combination with a side bar of the mainframe and with a longitudinally disposed main spring, of, alongitudinally disposed pneumatic cushion which bears against the sidebar, shock transmitting means comprising a longitudi- S0 nally disposedbar upon which the cushion rests and opposed half springs having theirfree ends directed toward the center of saidlast named bar and acting,thereon, the half springs being connected to the ends of the 55 mainspring, a spring bar upon which the P main spring restsand which issupported at its ends, one ofthe end supports for said bar comprisingpendant link.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. I

. WALTER H. COOK.

Witnesses:

THOMAS R. RICHARDSON,

' ROBERT WATERMAN.

Copies of this patent may be obtained for-five cents each; by addressingthe Commissioner of Patents; i 'Vifashington,1').C. '1,

